EP1114698A2 - Crimping pliers - Google Patents

Crimping pliers Download PDF

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Publication number
EP1114698A2
EP1114698A2 EP00811141A EP00811141A EP1114698A2 EP 1114698 A2 EP1114698 A2 EP 1114698A2 EP 00811141 A EP00811141 A EP 00811141A EP 00811141 A EP00811141 A EP 00811141A EP 1114698 A2 EP1114698 A2 EP 1114698A2
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EP
European Patent Office
Prior art keywords
bearing
crimping pliers
swivel arms
opposite
arms
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00811141A
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German (de)
French (fr)
Other versions
EP1114698B1 (en
EP1114698A3 (en
Inventor
René Amherd
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Von Arx AG
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Von Arx AG
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Filing date
Publication date
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Publication of EP1114698A2 publication Critical patent/EP1114698A2/en
Publication of EP1114698A3 publication Critical patent/EP1114698A3/en
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Publication of EP1114698B1 publication Critical patent/EP1114698B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/048—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods using presses for radially crimping tubular elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5367—Coupling to conduit

Definitions

  • the invention relates to a pressing tongs for a pressing device for connecting a Pipe section with a press fitting according to the generic term of the independent Claims 1 and 6.
  • a pressing device which has a pressing tongs for connecting of a pipe with a press fitting.
  • the pressing tongs comprise two Swivel arms, which can be pivoted between two identical T-shaped parts by means of a bolt Carrier plates are hinged.
  • the swivel arms are at one end with a Provide contact surface for the system on the press cylinder of the press device. At the opposite end they are as jaws facing each other Press surfaces designed.
  • the linkages for the bolts are on the Carrier plates at a distance.
  • In the area of the free end of the T-shaped carrier plates is a receptacle of a connecting bolt for connection to the Pressing device.
  • the swivel arms slide with their contact surfaces on Press device along backwards.
  • the tensile force is applied to the T-shaped via the connecting bolt Transfer carrier plates.
  • the swivel arms pivot around the Bearing pins and the press jaws are moved against each other and pressed together.
  • a disadvantage of this pressing tongs is that the Swivel jaws free around the bearing bolts opposite the T-shaped support plates are pivotable. Therefore, the swivel jaws can move longitudinally against each other shift a certain amount. This causes the Clamping jaws and thus the actual clamping surfaces against each other in the longitudinal direction can be slightly shifted. This then results in an inaccurate pressing of the fitting with the pipe. There is also a risk that the fitting and / or pipe at the start of the Injection can be damaged so that a sealing connection is not guaranteed is.
  • the object of the invention is to provide a pressing tongs of the type mentioned, which a prevents inaccurate commencement of pressing and the resulting disadvantages overcomes.
  • a press device with associated, replaceable pressing tongs is in view shown.
  • the pressing device 2 comprises a drive unit and a connection unit to connect with a crimping pliers 1.
  • the connection unit consists of two Holding plates 22.
  • the pressing tongs 1 with their two T-shaped carrier plates 11, 11 ' inserted between the holding plates 22.
  • a connecting pin 22 through the holding plates and a receiving opening 112 on the T-shaped carrier plates 11, 11 'pushed through and secured.
  • the press device is now ready for use.
  • the pressing tongs 1 arrive with their two swivel arms 12 when actuated Contact surfaces 23 on the device 2 to bear. When pulling the crimping tool further back 1, the swivel arms 12 are pushed sideways outward and thus the pressure accomplished.
  • FIG. 2 shows the pressing tongs 1 in more detail. It refers to one according to the prior art.
  • the pressing tongs 1 consist of two T-shaped ones Carrier plates 11, 11 '.
  • the carrier plates 11, 11 'each have one on the side of the beam Bolt bearing 113, 113 '.
  • the receiving opening 112 is located at the free end for receiving the connecting bolt 21.
  • the swivel arms 12, 12 ' are between the two T-shaped support plates 11, 11 'pivotally supported by one each Bearing pins 13, 13 ', which are held in the pin bearings 113 113'.
  • the Swivel arms 12, 12 ' form jaws 14, 14' in the front part, which have opposing pressing surfaces 15, 15 '.
  • the pressing surfaces 15, 15 ' form an opening in the closed state of the pressing tongs, which is approximately the same Diameter of the pipes to be pressed, respectively.
  • Connection sleeves corresponds. This Opening is limited by front end edges 16 and rear end edges 17. in the when closed, the front edges of both jaws lie on top of each other.
  • the Bearing bolts 13 can be secured to the T-shaped carrier plates by means of retaining rings 131 11, 11 'be secured.
  • both swivel arms (12, 12 ') are now by means of one Active connection so connected that it is compulsorily even and opposite are pivotable.
  • the active connection of the two swivel arms (12, 12 ') consists of nearly interlocking driver elements.
  • FIG Exploded view of Figure 3 clearly visible.
  • the swivel arms are now according to the invention each provided with a storage area 181, 181 '.
  • the storage area is located on an imaginary connection line between the swivel bearings 132 through which the bearing bolts 13 are guided.
  • Each storage area includes one Half of a bearing for a guide pin 183.
  • This bearing includes one Bearing shell 182, 182 ', each of the guide pin 183 by less than half embraces. This is necessary because the swivel arms 12, 12 'when actuated by the Swivel bearing 132 can be pivoted and thus a little around Turn guide pin 183.
  • the guide pin has the two bearing areas 181, 181 ' and so that the swivel arms 12, 12 'rotatably connect each other, so both Swing arms forcibly swung evenly and in opposite directions.
  • the guide pin 183 the pivoting movements of the pivot arms 12, 12 ' leads symmetrically.
  • the jaws 14, 14 'with the pressing surfaces 15, 15 ' also pivoted exactly symmetrically and each pressing takes place in the same way precise.
  • the Guide pin When the swivel arms 12, 12 'are actuated, the Guide pin relative to the T-shaped support plates 11, 11 'in the longitudinal direction somewhat moved backwards or forwards. Therefore, it must not be fixed to the carrier plates 11, 11 'be connected. It is therefore provided with the smoothest possible end faces so that it as smoothly as possible on the inner surfaces of the T-shaped carrier plates slides along.
  • the Guide pin 183 now has shoulders 1831, which form stop surfaces 1832.
  • the guide pin 183 is now held rotatably in the bearing shells 182, 182 ', wherein he with his stop surfaces 1832 from the bolt guide surfaces 185 through Striking is performed.
  • the guide pin 183 is so short that it is in the Storage area is kept properly and not in contact with its end faces can come with the inner surfaces of the T-shaped support plates 11, 11 '.
  • a further improvement of the pressing tongs is achieved by using an expanding spring 184 reached. It is now possible to design the spreading spring 184 as a spiral spring, which the guide pin 183 at least partially, preferably several times.
  • the Spreading spring 184 as a spiral spring made of spring steel wire holds extremely many Stress cycles stand and do not tend to break. It is also on the guide pin 183 perfectly stored and well managed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Manipulator (AREA)
  • Surgical Instruments (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The press wrench tool (2), to connect a pipe section in a press fit, has a drive and a drive connection with two holding plates (22) to the wrench (1). The wrench (1) has two swing arms (12), between two T-shaped carrier plates (11) at two bearing mounting bolts (13) with a gap between them, through the swing arms (12), to give a swing mounting with the carrier plates. The swing arms (12) have clamping pads (14) with press surfaces. The swing arms (12) are operated so that their movement is fixed evenly and against each other. The movements of the swing arms are set by bearing bushes as carriers which act on them. The wrench (1) is fitted into the tool (2) at the laying surface (23) and, on further retraction, the swing arms (12) are moved outwards to the side to give the press action.

Description

Die Erfindung betrifft eine Presszange für ein Pressgerät zum Verbinden eines Rohrabschnittes mit einem Pressfitting nach dem Oberbegriff der unabhängigen Patentansprüche 1 und 6.The invention relates to a pressing tongs for a pressing device for connecting a Pipe section with a press fitting according to the generic term of the independent Claims 1 and 6.

Aus DE 196 31 019 ist ein Pressgerät bekannt, welches eine Presszange zum Verbinden eines Rohres mit einem Pressfitting umfasst. Die Presszange umfasst zwei Schwenkarme, welche mittels je einem Bolzen schwenkbar zwischen zwei gleichen T-förmigen Trägerplatten angelenkt sind. Die Schwenkarme sind an einem Ende mit einer Anlagefläche für die Anlage am Presszylinder des Pressgerätes versehen. Am gegenüberliegenden Ende sind sie als Klemmbacken mit zueinander gerichteten Pressflächen ausgestaltet. Die Anlenkungen für die Bolzen befinden sich an den Trägerplatten im Abstand. Im Bereich des freien Endes der T-förmigen Trägerplatten befindet sich eine Aufnahme eines Verbindungsbolzens zur Verbindung mit dem Pressgerät. Beim Einsatz dieses Gerätes wird nun die Presszange nach hinten zum Pressgerät gezogen. Dabei gleiten die Schwenkarme mit ihren Anlageflächen am Pressgerät entlang nach hinten. Die Zugkraft wird über den Verbindungsbolzen auf die T-förmigen Trägerplatten übertragen. Dadurch schwenken die Schwenkarme um die Lagerbolzen und die Pressbacken werden gegeneinander bewegt und zusammengedrückt. Ein Nachteil dieser Presszange besteht darin, dass die Schwenkbacken um die Lagerbolzen gegenüber den T-förmigen Trägerplatten frei schwenkbar sind. Daher können sich die Schwenkbacken gegeneinander längs um ein gewisses Mass verschieben. Dies bewirkt, dass beim Beginn einer Verpressung die Klemmbacken und damit die eigentlichen Klemmflächen gegeneinander in Längsrichtung etwas verschoben sein können. Dies ergibt dann eine ungenaue Verpressung des Fittings mit dem Rohr. Zudem besteht die Gefahr, dass Fitting und/oder Rohr beim Beginn der Verpressung so beschädigt werden, dass eine dichtende Verbindung nicht gewährleistet ist. From DE 196 31 019 a pressing device is known which has a pressing tongs for connecting of a pipe with a press fitting. The pressing tongs comprise two Swivel arms, which can be pivoted between two identical T-shaped parts by means of a bolt Carrier plates are hinged. The swivel arms are at one end with a Provide contact surface for the system on the press cylinder of the press device. At the opposite end they are as jaws facing each other Press surfaces designed. The linkages for the bolts are on the Carrier plates at a distance. In the area of the free end of the T-shaped carrier plates is a receptacle of a connecting bolt for connection to the Pressing device. When using this device, the crimping tool is now to the rear Press tool pulled. The swivel arms slide with their contact surfaces on Press device along backwards. The tensile force is applied to the T-shaped via the connecting bolt Transfer carrier plates. As a result, the swivel arms pivot around the Bearing pins and the press jaws are moved against each other and pressed together. A disadvantage of this pressing tongs is that the Swivel jaws free around the bearing bolts opposite the T-shaped support plates are pivotable. Therefore, the swivel jaws can move longitudinally against each other shift a certain amount. This causes the Clamping jaws and thus the actual clamping surfaces against each other in the longitudinal direction can be slightly shifted. This then results in an inaccurate pressing of the fitting with the pipe. There is also a risk that the fitting and / or pipe at the start of the Injection can be damaged so that a sealing connection is not guaranteed is.

Aufgabe der Erfindung ist es, eine Presszange genannter Art anzugeben, welche ein ungenauer Beginn der Verpressung verhindert und die dadurch entstehenden Nachteile überwindet.The object of the invention is to provide a pressing tongs of the type mentioned, which a prevents inaccurate commencement of pressing and the resulting disadvantages overcomes.

Diese Aufgabe wird durch die in den Patentansprüchen angegebene Erfindung gelöst.This object is achieved by the invention specified in the patent claims.

Die Erfindung wird nachstehend im Zusammenhang mit den Zeichnungen beschrieben. Es zeigen:

Figur 1
ein Pressgerät mit einer Presszange gemäss Erfindung;
Figur 2
eine Presszange nach Stand der Technik in Aufsicht;
Figur 3
eine erfindungsgemässe Presszange als Explosionszeichneung und
Figur 4
eine besondere Ausführung des Zentrierbolzens
The invention is described below in connection with the drawings. Show it:
Figure 1
a pressing device with a pressing tongs according to the invention;
Figure 2
a pressing tongs according to the prior art in supervision;
Figure 3
an inventive crimping tool as an exploded drawing and
Figure 4
a special version of the centering bolt

In der Figur 1 ist ein Pressgerät mit zugehöriger, auswechselbarer Presszange in Ansicht dargestellt. Das Pressgerät 2 umfasst eine Antriebseinheit und eine Verbindungseinheit zum Verbinden mit einer Presszange 1. Die Verbindungseinheit besteht aus zwei Halteplatten 22. Die Presszange 1 wird mit ihren zwei T-förmigen Trägerplatten 11, 11' zwischen die Halteplatten 22 eingeschoben. Alsdann wird ein Verbindungsbolzen 22 durch die Halteplatten und eine Aufnahmeöffnung 112 an den T-förmigen Trägerplatten 11, 11' durchgestossen und gesichert. Das Pressgerät ist somit zur Verwendung bereit. Die Presszange 1 kommt bei Betätigung mit ihren beiden Schwenkarmen 12 an Anlageflächen 23 am Gerät 2 zum anliegen. Beim weiteren Zurückziehen der Presszange 1 werden die Schwenkarme 12 nach seitwärts aussen gestossen und damit die Pressung vollzogen.In Figure 1, a press device with associated, replaceable pressing tongs is in view shown. The pressing device 2 comprises a drive unit and a connection unit to connect with a crimping pliers 1. The connection unit consists of two Holding plates 22. The pressing tongs 1 with their two T-shaped carrier plates 11, 11 ' inserted between the holding plates 22. Then a connecting pin 22 through the holding plates and a receiving opening 112 on the T-shaped carrier plates 11, 11 'pushed through and secured. The press device is now ready for use. The pressing tongs 1 arrive with their two swivel arms 12 when actuated Contact surfaces 23 on the device 2 to bear. When pulling the crimping tool further back 1, the swivel arms 12 are pushed sideways outward and thus the pressure accomplished.

In der Figur 2 ist die Presszange 1 mehr detailliert dargestellt. Dabei handelt es sich um eine solche nach dem Stand der Technik. Die Presszange 1 besteht aus zwei T-förmigen Trägerplatten 11, 11'. Die Trägerplatten 11, 11' weisen am Balkenteil seitlich je eine Bolzenlagerung 113, 113' auf. Am freien Ende befindet sich die Aufnahmeöffnung 112 zur Aufnahme des Verbindungsbolzens 21. Die Schwenkarme 12, 12' sind zwischen den beiden T-förmigen Trägerplatten 11, 11' schwenkbar gelagert mittels je einem Lagerbolzen 13, 13', welche in den Bolzenlagerungen 113 113' gehalten sind. Die Schwenkarme 12, 12' bilden im vorderen Teil Klemmbacken 14, 14', welche gegeneinander gerichtete Pressflächen 15, 15' aufweisen. Die Pressflächen 15, 15' bilden im geschlossenen Zustand der Presszange eine Oeffnung, welche annähernd dem Durchmesser der zu verpressenden Rohre resp. Verbindungsmuffen entspricht. Diese Oeffnung ist durch vordere Stirnkanten 16 und hintere Stirnkanten 17 begrenzt. Im geschlossenen Zustand liegen die Stirnkanten beider Klemmbacken aufeinander. Die Lagerbolzen 13 können mittels Sicherungsringen 131 an den T-förmigen Trägerplatten 11, 11' gesichert sein.FIG. 2 shows the pressing tongs 1 in more detail. It refers to one according to the prior art. The pressing tongs 1 consist of two T-shaped ones Carrier plates 11, 11 '. The carrier plates 11, 11 'each have one on the side of the beam Bolt bearing 113, 113 '. The receiving opening 112 is located at the free end for receiving the connecting bolt 21. The swivel arms 12, 12 'are between the two T-shaped support plates 11, 11 'pivotally supported by one each Bearing pins 13, 13 ', which are held in the pin bearings 113 113'. The Swivel arms 12, 12 'form jaws 14, 14' in the front part, which have opposing pressing surfaces 15, 15 '. The pressing surfaces 15, 15 ' form an opening in the closed state of the pressing tongs, which is approximately the same Diameter of the pipes to be pressed, respectively. Connection sleeves corresponds. This Opening is limited by front end edges 16 and rear end edges 17. in the when closed, the front edges of both jaws lie on top of each other. The Bearing bolts 13 can be secured to the T-shaped carrier plates by means of retaining rings 131 11, 11 'be secured.

Erfindungsmässig werden nun beide Schwenkarme (12, 12') mittels einer Wirkverbindung so verbunden, dass sie zwangweise gleichmässig und gegensinnig schwenkbar sind. Die Wirkverbindung der beiden Schwenkarme (12, 12') besteht aus annähernd formschlüssig ineinandergreifenden Mitnehmer-Elementen.According to the invention, both swivel arms (12, 12 ') are now by means of one Active connection so connected that it is compulsorily even and opposite are pivotable. The active connection of the two swivel arms (12, 12 ') consists of nearly interlocking driver elements.

Wie die Elemente der Presszange 1 zusammengefügt werden ist aus der Explosionzeichung der Figur 3 gut ersichtlich. Die Schwenkarme sind nun erfindungsgemäss mit je einem Lagerbereich 181, 181' versehen. Der Lagerbereich befindet sich etwa auf einer gedachten Verbindungslinie zwischen den Schwenklagern 132, durch welche die Lagerbolzen 13 geführt werden. Jeder Lagerbereich umfasst eine Hälfte einer Lagerung für einen Führungsbolzen 183. Diese Lagerung umfasst eine Lagerschale 182, 182', welche den Führungsbolzen 183 je um weniger als die Hälfte umfängt. Die ist notwendig, da die Schwenkarme 12, 12' bei der Betätigung um die Schwenklager 132 geschwenkt werden und sich damit ein wenig um den Führungsbolzen 183 drehen. Da der Führungsbolzen die beiden Lagerbereiche 181, 181' und damit die Schwenkarme 12, 12' drehbar gegeneinander verbindet, so werden beide Schwenkarme zwangsweise gleichmässig und gegensinnig geschwenkt. Dies bedeutet, dass der Führungsbolzen 183 die Schwenkbewegungen der Schwenkarme 12, 12' symmetrisch führt. Somit werden die Klemmbacken 14, 14' mit den Pressflächen 15, 15' ebenfalls exakt symmetrisch geschwenkt und jeder Verpressung erfolgt gleich präziese.How the elements of the pressing tongs 1 are put together is shown in FIG Exploded view of Figure 3 clearly visible. The swivel arms are now according to the invention each provided with a storage area 181, 181 '. The storage area is located on an imaginary connection line between the swivel bearings 132 through which the bearing bolts 13 are guided. Each storage area includes one Half of a bearing for a guide pin 183. This bearing includes one Bearing shell 182, 182 ', each of the guide pin 183 by less than half embraces. This is necessary because the swivel arms 12, 12 'when actuated by the Swivel bearing 132 can be pivoted and thus a little around Turn guide pin 183. Since the guide pin has the two bearing areas 181, 181 ' and so that the swivel arms 12, 12 'rotatably connect each other, so both Swing arms forcibly swung evenly and in opposite directions. This means, that the guide pin 183 the pivoting movements of the pivot arms 12, 12 ' leads symmetrically. Thus, the jaws 14, 14 'with the pressing surfaces 15, 15 'also pivoted exactly symmetrically and each pressing takes place in the same way precise.

Bei der Betätigung der Schwenkarme 12, 12' wird aus geometrischen Gründen der Führungsbolzen gegenüber den T-förmigen Trägerplatten 11, 11' in Längsrichtung etwas nach hinten oder vorne verschoben. Daher darf er nicht fest mit den Trägerplatten 11, 11' verbunden sein. Er ist daher mit möglichst glatten Stirnflächen versehen, damit er möglichst reibungslos an den inneren Oberflächen der T-förmigen Trägerplatten entlanggleitet. In einer verbesserten Ausführungsform sind die Lagerbereiche 181, 181' mit Bolzenführungsflächen 185 zwischen den Lagerschalen 182, 182' versehen. Der Führungsbolzen 183 weist nun Absätze 1831 auf, welche Anschlagflächen 1832 bilden. Der Führungsbolzen 183 ist nun in den Lagerschalen 182, 182' drehbar gehalten, wobei er mit seinen Anschlagflächen 1832 von den Bolzenführungsflächen 185 durch Anschlagen geführt wird. Der Führungsbolzen 183 wird so kurz ausgeführt, dass er im Lagerbereich einwandfrei gehalten ist und dabei mit seinen Stirnseiten nicht in Berührung mit den inneren Oberflächen der T-förmigen Trägerplatten 11, 11' kommen kann.When the swivel arms 12, 12 'are actuated, the Guide pin relative to the T-shaped support plates 11, 11 'in the longitudinal direction somewhat moved backwards or forwards. Therefore, it must not be fixed to the carrier plates 11, 11 'be connected. It is therefore provided with the smoothest possible end faces so that it as smoothly as possible on the inner surfaces of the T-shaped carrier plates slides along. In an improved embodiment, the storage areas 181, 181 ' provided with pin guide surfaces 185 between the bearing shells 182, 182 '. The Guide pin 183 now has shoulders 1831, which form stop surfaces 1832. The guide pin 183 is now held rotatably in the bearing shells 182, 182 ', wherein he with his stop surfaces 1832 from the bolt guide surfaces 185 through Striking is performed. The guide pin 183 is so short that it is in the Storage area is kept properly and not in contact with its end faces can come with the inner surfaces of the T-shaped support plates 11, 11 '.

Eine weitere Verbesserung der Presszange wird durch Einsetzten einer Spreizfeder 184 erreicht. Es ist nun möglich, die Spreizfeder 184 als Spiralfeder auszugestalten, welche den Führungsbolzen 183 mindestens teilweise, vorzugsweise mehrmals, umfängt. Die Spreizfeder 184 als Spiralfeder aus Federstahldraht hält ausserordentlich vielen Belastungszyklen stand und neigt nicht zum brechen. Zudem ist sie am Führungsbolzen 183 einwandfrei gelagert und ausgezeichnet geführt.A further improvement of the pressing tongs is achieved by using an expanding spring 184 reached. It is now possible to design the spreading spring 184 as a spiral spring, which the guide pin 183 at least partially, preferably several times. The Spreading spring 184 as a spiral spring made of spring steel wire holds extremely many Stress cycles stand and do not tend to break. It is also on the guide pin 183 perfectly stored and well managed.

Claims (8)

Presszange für ein Pressgerät zum Verbinden eines Rohrabschnittes mit einem Pressfitting, bestehend aus zwei Schwenkarmen (12,12'), welche zwischen zwei T-förmigen Trägerplatten (11) an zwei voneinander im Abstand (A) angeordneten Lagerbolzen (13,13'), die je einen Schwenkarm (12,12') durchsetzen, mit den Trägerplatten schwenkbar verbunden sind und wobei die Schwenkarme (12,12') mit Klemmbacken (14,14') mit Pressflächen (15,15') ausgestaltet sind, dadurch gekennzeichnet, dass beide Schwenkarme (12, 12') mittels einer Wirkverbindung zwangweise gleichmässig und gegensinnig schwenkbar sind.Crimping pliers for a pressing device for connecting a pipe section to a Press fitting, consisting of two swivel arms (12, 12 '), which are between two T-shaped carrier plates (11) arranged on two at a distance (A) Bearing bolts (13, 13 '), which each pass through a swivel arm (12, 12'), with the Carrier plates are pivotally connected and the pivot arms (12, 12 ') are designed with clamping jaws (14, 14 ') with pressing surfaces (15, 15'), thereby characterized in that both swivel arms (12, 12 ') by means of an operative connection are forcibly even and can be swiveled in opposite directions. Presszange nach Anspruch 1, dadurch gekennzeichnet, dass der Wirkverbund der beiden Schwenkarme (12,12') aus annähernd formschlüssig ineinandergreifenden Mitnehmerelementen besteht.Crimping pliers according to claim 1, characterized in that the active combination of two swivel arms (12, 12 ') from approximately interlocking interlocking Driver elements exist. Presszange nach Anspruch 2 ,dadurch gekennzeichnet, dass die annähernd formschlüssig ineinander greifenden Mitnehmerelemente aus je einem Lagerbereich (181, 181') bestehen, welche sich an den Schwenkarmen (12, 12') zwischen den Lagerbolzen (13,13') gegenüberliegend mindestens teilweise als Lagerschalen (182, 182') ausgebildet sind, und dass zwischen den Lagerbereichen (181, 181') ein Parallelführungsbolzen (183) so in den Lagerschalen (182, 182') gelagert ist, dass er gegenüber den Schwenkarmen (12,12') drehbeweglich ist und gegenüber den T-förmigen Trägerplatten (11) verbindungslos längsverschiebbar ist.Crimping pliers according to claim 2, characterized in that the approximately form-fitting interlocking driver elements from one Storage area (181, 181 '), which are located on the swivel arms (12, 12') between the bearing bolts (13, 13 ') opposite at least partially as Bearing shells (182, 182 ') are formed, and that between the Storage areas (181, 181 ') a parallel guide pin (183) in the Bearing shells (182, 182 ') is mounted so that it is opposite the swivel arms (12, 12 ') is rotatable and opposite the T-shaped support plates (11) is longitudinally displaceable without connection. Presszange nach Anspruch 3, dadurch gekennzeichnet, dass jede Lagerschale (182, 182') den Parallelführungsbolzen (183) um weniger als seinen halben Umfang umfängt.Crimping pliers according to claim 3, characterized in that each bearing shell (182, 182 ') the parallel guide pin (183) by less than half Scope includes. Presszange nach Anspruch 3, dadurch gekennzeichnet, dass der Lagerbereich mit Bolzenführungsflächen (185) versehen ist und dass der Parallelführungsbolzen (183) Auflageflächen (1832) aufweist, welche an den Bolzenführungsflächen (185) lose anliegen. Crimping pliers according to claim 3, characterized in that the storage area with Bolt guide surfaces (185) is provided and that the parallel guide pin (183) bearing surfaces (1832), which on the bolt guide surfaces (185) fit loosely. Presszange für ein Pressgerät zum Verbinden eines Rohrabschnittes mit einem Pressfitting, bestehend aus zwei Schwenkarmen (12,12'), welche zwischen zwei T-förmigen Trägerplatten (11) an zwei voneinander im Abstand (A) angeordneten Lagerbolzen (13,13'), die je einen Schwenkarm (12,12') durchsetzen, mit den Trägerplatten schwenkbar verbunden sind und wobei die Schwenkarme (12,12') mit Klemmbacken (14,14') mit Pressflächen (15,15') ausgestaltet sind, dadurch gekennzeichnet, dass beide Schwenkarme (12,12') an einander gegenüberliegenden Stellen zwischen den Lagerbolzen (13,13') je einen Lagerbereich (181, 181') aufweisen, welche mindestens teilweise als Lagerschalen (182, 182') ausgebildet sind, und dass zwischen den Lagerbereichen (181, 181') ein Parallelführungsbolzen (183) so in den Lagerschalen (182, 182') gelagert ist, dass er gegenüber den Schwenkarmen (12,12') drehbeweglich ist und gegenüber den T-förmigen Trägerplatten (11) verbindungslos längsverschiebbar ist.Crimping pliers for a pressing device for connecting a pipe section to a Press fitting, consisting of two swivel arms (12, 12 '), which are between two T-shaped carrier plates (11) arranged on two at a distance (A) Bearing bolts (13, 13 '), which each pass through a swivel arm (12, 12'), with the Carrier plates are pivotally connected and the pivot arms (12, 12 ') are designed with clamping jaws (14, 14 ') with pressing surfaces (15, 15'), thereby characterized in that both swivel arms (12, 12 ') on each other opposite points between the bearing bolts (13, 13 ') each Have storage area (181, 181 '), which at least partially as Bearing shells (182, 182 ') are formed, and that between the Storage areas (181, 181 ') a parallel guide pin (183) in the Bearing shells (182, 182 ') is mounted so that it is opposite the swivel arms (12, 12 ') is rotatable and opposite the T-shaped support plates (11) is longitudinally displaceable without connection. Presszange nach Anspruch 1, dadurch gekennzeichnet, dass eine Spreizfeder (184) zwischen den beiden Schwenkarmen (12, 12') vorhanden ist.Crimping pliers according to claim 1, characterized in that an expansion spring (184) between the two pivot arms (12, 12 ') is present. Presszange nach Anspruch 7, dadurch gekennzeichnet, dass die Spreizfeder (184) eine Spiralfeder ist und den Parallelführungsbolzen (183) mindestens teilweise umfängt.Crimping pliers according to claim 7, characterized in that the spreading spring (184) is a spiral spring and the parallel guide pin (183) at least partially embraces.
EP00811141A 2000-01-07 2000-12-01 Crimping pliers Expired - Lifetime EP1114698B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH272000 2000-01-07
CH27002000 2000-01-07

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EP1114698A2 true EP1114698A2 (en) 2001-07-11
EP1114698A3 EP1114698A3 (en) 2002-01-16
EP1114698B1 EP1114698B1 (en) 2003-08-27

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US (1) US6434998B2 (en)
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AT (1) ATE248045T1 (en)
DE (1) DE50003436D1 (en)
ES (1) ES2202030T3 (en)

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EP2072188A1 (en) * 2007-12-17 2009-06-24 VIEGA GmbH & Co. KG. Press tool with bistable tension mechanism
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EP3231528A1 (en) * 2016-04-12 2017-10-18 Geberit International AG Pressing device with a bolt fixing
EP3610988A1 (en) * 2018-08-17 2020-02-19 Geberit International AG Pressing device with centred bolt fixing
CN111070155A (en) * 2018-10-19 2020-04-28 沃恩阿克斯公开股份有限公司 Press with sensor system for workpiece recognition
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US7155955B2 (en) 2001-09-11 2007-01-02 Emerson Electric Co. Crimping assembly
US7634859B2 (en) 2003-03-06 2009-12-22 Von Arx Ag Press device
CN100413624C (en) * 2003-03-06 2008-08-27 沃恩阿克斯公开股份有限公司 Press device
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CN102380559B (en) * 2010-09-03 2014-11-12 沃恩阿克斯公开股份有限公司 Press jaw pair for pressing units
EP3231528A1 (en) * 2016-04-12 2017-10-18 Geberit International AG Pressing device with a bolt fixing
EP3610988A1 (en) * 2018-08-17 2020-02-19 Geberit International AG Pressing device with centred bolt fixing
CN111070155A (en) * 2018-10-19 2020-04-28 沃恩阿克斯公开股份有限公司 Press with sensor system for workpiece recognition
USD1025732S1 (en) * 2023-08-03 2024-05-07 Qing Dai Hydraulic tool

Also Published As

Publication number Publication date
ATE248045T1 (en) 2003-09-15
US6434998B2 (en) 2002-08-20
EP1114698B1 (en) 2003-08-27
US20010013243A1 (en) 2001-08-16
DE50003436D1 (en) 2003-10-02
EP1114698A3 (en) 2002-01-16
ES2202030T3 (en) 2004-04-01

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